Question

Resolva as equações
a- (x+5)2=16
b- (x+5)2=9
c- (x+5)2=4
d- (x+5)2=1
e- (x+5)2=0

Answer 1

a) 2x + 10 = 16
2x = 6
x= 3

b) 2x + 10 = 9
2x = -1
x = -0,5

c) 2x + 10 = 4
2x = -6
x = -3

d) 2x + 10 = 1
2x = -9
x = -4,5

e) 2x + 10 = 0
2x = -10
x = -5

Answer 2

a) 2x + 10 = 16
2x = 16 - 10
2x = 6
x = 3

b) 2x + 10 = 9
2x = 9 - 10
2x = - 1
x = - 1/2

c) 2x + 10 = 4
2x = 4 - 10
2x = - 6
x = - 3

d) 2x + 10 = 1
2x = 1 - 10
2x = - 9
x = - 9/2

e)2x + 10 = 0
2x = - 10
x = - 5